Question : Directions: In the following question below are given some statements followed by some conclusions based on those statements. Taking the given statements to be true even if they seem to be at variance from commonly known facts. Read all the conclusions and then decide which of the given conclusions logically follows the given statements.
Statements:
No A is B.
No C is B.
Conclusions:
I. Some C is not A.
II. Some A is B.
Option 1: Neither conclusion follows
Option 2: Only conclusion II follows
Option 3: Only conclusion I follows
Option 4: Both conclusions I and II follow
Correct Answer: Neither conclusion follows
Solution : The possible Venn diagram according to the given statements is as follows –
Let's analyse the conclusions –
Conclusion (I):
Some C is not A – From the Venn diagram, it is evident that there is no direct relation between A and C. So, no definite relation can be drawn. Therefore, this conclusion does not follow.
Conclusion (II):
Some A is B – From the Venn diagram, it is evident that there is a negative relation between A and B. So, this conclusion does not follow.
So, neither conclusion follows. Hence, the first option is correct.
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